AC charging to 100%

[tgstaab]

I read the manual and only saw the recommendation to charge to 80% on DC charging but no recommendation for AC charging. Is it OK to charge to 100% all the time at home using AC charging?

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[Mach-Lee]

No, you should only charge to 90% at home unless going on a trip.

 

[tgstaab]

Thanks. That’s what I’ve been doing.

 

[MidnightPony]

Charge to 80 or 90% unless you have 2023 Mach-E Standard with the Phosphate battery...if you have that (LHM I think is what it is called) then you can charge to 100% as much as you want.

 

[ToOldForThis]

2023 Mach-E Standard with the Phosphate battery...if you have that (LHM I think is what it is called) then you can charge to 100% as much as you want.

It's called the LFP battery, Lithium Iron Phosphate. (The F comes the atomic symbol for Iron - Fe).

 

[RickMachE]

I read the manual and only saw the recommendation to charge to 80% on DC charging but no recommendation for AC charging. Is it OK to charge to 100% all the time at home using AC charging?

Unfortunately, the AC charging info is located under the High Voltage Battery section of the manual, not the Charging Section.

Page 166 of the 2023 manual:

Overnight Charging

You can increase the longevity and performance of your high voltage battery by using the charge scheduling and departure and comfort settings on your touchscreen or in the FordPass app. With Charge Scheduling you can improve the high voltage battery's longevity by delaying the start of charging and setting a maximum charging limit. It is recommended to set your preferred charging times to be at least 2-3 hours after your typical plug in time. This allows the battery to cool before charging begins. Additionally, setting the maximum charge level to 90% for everyday usage reduces strain on the battery. You can improve driving range and performance by scheduling departure times and cabin comfort level with the Departure and Comfort feature. This will not only warm or cool the cabin but also condition the battery to ensure best driving range and performance by the set departure time.

 

[tgstaab]

Thanks! I found it. Since EV's are new to a lot of people you'd think this would be more prominent.

 

[Mach-Lee]

Thanks! I found it. Since EV's are new to a lot of people you'd think this would be more prominent.

It should automatically reset back to 90% for the next charge if you set it higher than that, but Ford hasn't implemented intelligent overrides and user warnings about charging past 90% yet like other EV makers. Most other brands will pop up a warning if you try to set it too high.

 

[Mach En Cheese]

Ford should relay this info to the dealerships. Whenever I take my car in for service, they always charge to 100% and think they're doing me a favor. Lol

 

[Mach-Lee]

Ford should relay this info to the dealerships. Whenever I take my car in for service, they always charge to 100% and think they're doing me a favor. Lol

They are supposed to do that, and it's okay to charge to 100% before you drive it home since it's not going to sit for more than a day. Also difficult for them to stop it before 100% since there's no easy way to do that without setting up a new charging location.

 

[Mach En Cheese]

They are supposed to do that, and it's okay to charge to 100% before you drive it home since it's not going to sit for more than a day. Also difficult for them to stop it before 100% since there's no easy way to do that without setting up a new charging location.

Actually, it was at the dealership for 3 1/2 weeks one time. It sat on the lot for the first week, then on the charger for the next week. Off the chargers for a few days and then back on for the final week before I picked it up.

I'm curious about the AC vs DC discussion. I am far from an engineer but as I understand it, besides the issue with DC fast charging, isn't maintaining the battery SOC at either extreme, 100% or 0%, bad for the (correction: NCM) batteries? Regardless of how the charge was achieved, AC or DC, shouldn't we avoid 100% whenever possible?

 

[leeman]

That's weird because if they let you charge it to 100% then you should be able to do so without any problems

 

[HuntingPudel]

Actually, it was at the dealership for 3 1/2 weeks one time. It sat on the lot for the first week, then on the charger for the next week. Off the chargers for a few days and then back on for the final week before I picked it up.

I'm curious about the AC vs DC discussion. I am far from an engineer but as I understand it, besides the issue with DC fast charging, doesn't maintaining battery SOC at either extreme, 100% or 0%, bad for LFP batteries? Regardless of how the charge was achieved, AC or DC, shouldn't we avoid 100% whenever possible?

LFP batteries are more flexible on the extremes of charging than NMC batteries. For instance, a 2023-1/2 car with a standard LFP battery can be charged to 100% with less fear of degradation than a 2021 car with an NMC standard range battery. The NMC batteries prefer to be near the middle. ??

 

[Mach En Cheese]

That's weird because if they let you charge it to 100% then you should be able to do so without any problems

I made a correction.

I meant the NCM should not be charged to 100%. If you have the LFP, that should be fine.

 

[Mach En Cheese]

LFP batteries are more flexible on the extremes of charging than NMC batteries. For instance, a 2023-1/2 car with a standard LFP battery can be charged to 100% with less fear of degradation than a 2021 car with an NMC standard range battery. The NMC batteries prefer to be near the middle. ??

I have the 2022 CR1 so I try to keep it between 30-80%.

Even though I set my charge limit to 80% at home, the car default to 100% everywhere else unless I set the limit at each new location. Seems like it should be the other way around

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